セルロースおよびリグニン-セルロース前駆体から炭素繊維への連続変換：低温炭化時の延伸の重要性
Continuous Conversion of Cellulose and Lignin-Cellulose Precursors to Carbon Fibers: The Importance of Stretching during Low-Temperature Carbonization (原題)
Andreas Bengtsson, Mijung Cho, Jenny Bengtsson, Maria Sedin, Helena Westerback, Michael Hummel
🤖 gxceed AI 要約
日本語
セルロース・リグニン混合フィラメントを乾式紡糸し、炭化時に延伸（DR=1〜1.5）を加えることで分子配向と力学特性がどう変化するかを検討した。リグニン50%の前駆体は延伸によりヤング率が25%向上し、高温炭化後は58GPaに達した。石油由来炭素繊維の持続可能な代替に向けた製造プロセス改善の知見を提供する。
English
Cellulose-lignin filaments were dry-jet wet spun and carbonized with varying draw ratios (1-1.5). Stretching improved molecular orientation and mechanical properties; 50% lignin precursors showed a 25% modulus increase, reaching 58 GPa after high-temperature carbonization. This offers a route to higher-performance bioderived carbon fibers as sustainable alternatives to petroleum-based ones.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は炭素繊維で世界をリードするが、原料は石油由来が中心。バイオ由来前駆体と延伸プロセスの知見は、国内素材メーカーの脱炭素・サプライチェーン低炭素化戦略に示唆を与える。ただし開示・政策との直接の接点は薄い。
In the global GX context
Bio-based carbon fiber sits within the broader industrial decarbonization agenda (materials substitution, embodied carbon reduction) that underpins corporate climate targets and Scope 3 accounting. It is relevant to global efforts to decarbonize hard-to-abate materials supply chains, though it does not directly engage TCFD/ISSB disclosure frameworks.
👥 読者別の含意
🔬研究者:バイオ由来炭素繊維の延伸・配向制御に関する定量的な材料科学データを提供する。
🏢実務担当者:素材メーカーや炭素繊維ユーザーが、バイオ由来原料と製造プロセス改善による低炭素化の可能性を検討する際の参考になる。
📄 Abstract（原文）
Abstract Cellulose-lignin-based fibrous carbon materials have received significant attention as sustainable alternatives to petroleum-derived carbon fibers. While prior studies have mainly focused on spinning parameters and thermal processing to enhance mechanical performance, limited research has addressed the influence of stretching these biocomponent filaments during carbonization on molecular alignment, crystalline structure, and resulting mechanical properties. In this study, continuous cellulose-lignin mixed filaments containing 0, 30, and 50% lignin were produced using a dry-jet wet spinning method. The filaments underwent tailored stabilization and carbonization using a lab-scale continuous line, with varying draw ratios (DR = 1–1.5) applied during carbonization at 850 °C. The effects of stretching and lignin content on the carbon fibers’ properties were evaluated through tensile testing, wide-angle X-ray scattering (WAXS), and Raman spectroscopy. Lignin-containing filaments demonstrated improved stretchability compared to pure cellulose fibers. Especially, carbon fibers derived from precursor fibers with 50 wt % lignin showed a 25% increase in Young’s modulus under DR = 1.5 (49 GPa) relative to DR = 1 (41 GPa). After high-temperature carbonization at 1100 °C, the modulus further increased to 58 GPa compared to 46 GPa for unstretched fibers, corresponding to an enhanced molecular orientation factor (0.6 vs 0.5) confirmed by WAXS. This approach provides a promising route toward higher performance of bioderived carbon fibers.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1021/acsomega.6c06352first seen 2026-10-04 04:45:04
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